Electrically operated remote control device



y 1940- F. w. RAHRER El AL 2,208,948

ELECTRICALLY OPERATED REMOTE CONTROL DEVICE Filed Aug. 9, 1938 2Sheets-Sheet 1 76 77 gay/ INVENTOR S $14M W 1 BY 9 S W M AT TORNEY July23, 1940. HR ET AL 2,208,948

ELECTRICALLY OPERATED REMOTE CONTROL DEVICE FiledAug. 9, 1938 2Sheets-Sheet 2 a ma vvvvvvv NVENTOR! $1 M M BY 6% M AT I'ORNEY PatentedJuly 23, 1940 ELECTRIOALLY OPERATED REMOTE CONTROL DEVICE Francis W.Rahrer and Sam- Edelman, Anniston, Ala.

Application August 9, 1938, Serial No. 223,805

2 Claims.

Our invention relates to an electrically operated remote control deviceand it is the object of the invention to provide a remote control deviceparticularly adapted for use in controlling the 5 speed of an internalcombustion engine.

Another object of the invention is to provide a remote control device soconstructed and arranged that vibration and jarring will not cause itsposition to be altered.

' Other objects and features of the invention will be apparent from theaccompanying drawings of an illustrative embodiment of the invention andthe following specification.

In the accompanying drawings, Fig. 1 is a front side elevation of anembodiment of the invention:

Fig. 2 is a top plan view of the device shown in Fig. 1;

Fig. 3 is a bottom plan view of the device shown in Fig. 1;

Fig. 4 is a rear side elevation of the device shown in Fig. 1;

Fig. 5 is an end view of the device shown in Fig. 1;

Fig. 6 is a diagrammatic showing of a circuit arrangement.

In the form of the invention shown in the accompanying drawings, thereis a framework III on which other parts of the device are carried. Theframework ID has mounting brackets II by which it may be secured to anengine base or panelboard. The framework II) also has clamps I2 whichare adapted to hold solenoids I3 and I4 in spaced relation to eachother. The solenoids I3 and I4 have a common core l5 which extendsbeyond the solenoid l4 and has at its outer end a ball portion I6 of aball and socket arrangement to which a throttle control rod I! or othercontrol member may be secured.

Encasing the core I5 in the space between 40 the solenoids there is atube I8 which has a continuous longitudinal slit through which an.operating arm I9 carried by said core projects.

The operating arm I9 engages with a tie bar 20 carried by toggle arms 2|and 22 pivotally secured on the framework I0. Thus movement of the coreI5 will cause a corresponding movement of the tie bar 2|] and itssupporting toggle arms 2| and 22.

A switch arm 23 extending in an opposite direction to the toggle arms 2|and 22 is also pivotally secured to the framework l and a spring 24 issecured between a projection 25 on the lower portion of said switch armand the tie bar 20. The spring 24 normally urges the switch arm andtoggle arms together. The switch arm 23 car- (c1. rzs-sas ries a contact26 adapted to connect said switch arm with either of two terminals 21 or28 carried on the framework In. The switch arm 23 is also adapted torest against one of two electro-magnets 29 or 36 when the contact 26forms a connection to one of the terminals 21 or 28, respectively. Theswitch arm 23 being of a material subject to being attracted by anelectro-magnet, when the tie bar 20 and the toggle arms 2! and 22 aremoved by the operation of one of the solenoids [3 or l4, the spring 24will be charged so as to exert a force so directed as to tend to movethe switch arm 23 and the contact 26 away from the terminal and magnetto which it is connected and into contact with the other of saidterminals and magnets. However, the attraction of the electro-magnetagainst which the switch arm is then resting is sufiicient to resist thepull of the spring when said electro-magnet is energized.

The operation of the device and its wiring connections are as follows:

One side of each of the solenoids I3 and I4 is connected to one side ofa battery 3| through wires 32 and 33, respectively. The other side ofthe solenoid I3 is connected in series with the electro-magnet 29 to theterminal 28 through wires 34 and 35. The other side of the solenoid IQis connected in series with the electro-magnet 39 to the terminal 21 bythe wires 36 and 31. The switch arm 23 and the contact 26 being adaptedto connect with either of the terminals 21 and 28 form a common elementin each circuit and the switch arm 23 is connected by a wire 38 througha switch 39 to the opposite side of the battery 31 thus completing thecircuit.

When the switch 39 is closed, to operate the control device from aposition such as shown in the full lines in Fig. 6, the solenoid I3 willbe energized causing the core l5 to move so that the throttle is broughtto its new position. This movement of the core I5 also moves the tie bar29 and the toggle arms 2| and 22 so that the spring 24 exerts a forcetending to carry the switch arm 23 to a position where the contacts 26will connect with the terminals 21 as has been 5 previously described.However, when the circuit to the solenoid is completed by closing theswitch 39, the electro-magnet 29 is also energized and is of sufficientstrength to hold the switch arm 23 against the pull of the chargedspring so long as the switch 39 is closed. Upon opening the switch 39,the circuit through the electromagnet 29 is interrupted and the spring24 is allowed to carry the switch arm 23 to the position where thecontact 26 connects to the terminal 21. Thus, when the switch 39 isagain closed, the solenoid M will be energized as it has now been placedin the circuit to the battery and this will cause a reverse movement ofthe core l5, the tie .bar 20 and the toggle arms 2| and 22. In thisinstance, while the switch 39 is closed, the electro-magnet 30 holds theswitch arm 23 against movement until the switch 39 is opened. Thus theswitch arm 23 is adapted to be placed in circuit with either of the twosolenoids 13 or I4 and when the switch 39 is opened, the force of thespring 24 will carry the switch arm 23 to its appropriate position andthe spring will also hold the toggle arms 2! and 22 and the switch armand thus the core l5 as well in their rela. tive positions which theyhave now assumed.

While a preferred embodiment of the invention has been illustrated anddescribed, it will be understood that many details thereof may bevariedwithin wide limits and it is not desired tolimit the invention tothe precise form shown andL described.

weclaimz. 1 .31 In an electrically operated control device comprising apair of solenoids having a common core connectedtoa control member andreciprocable by alternately energizing said solenoids, and twocircuitscontrolled by a common switch and eachincluding one ofsaidsolenoids and a holding magnet; a pivoted toggle arm connected tosaid core, a switch arm pivoted on the same pivot as the toggle arm andarranged to swing between said holding magnets so thatit may be held byeither one of them in position to close the circuit through that magnet,a spring connecting said arms and extending past said pivot on one sidethereof to hold said arm against one of said magnets and arranged tomove over said pivot when said switch arm swings to the other magnet,whereby, when said switch is closed to energize the magnet thencontacting the switch arm and the solenoid in the same circuit, thespring will be charged and when the-switch is opened the spring willswing the switch arm against the other magnet and in position to closethe circuit therethrough, and whereby in either position of the switcharm the spring will yieldingly resist movement of said core and controlmember. 2. In an electrically operated control device comprising a pairof solenoids having a common core connected to a control member andreciprocable by alternately energizing said solenoids, andv two circuitscontrolled by a common switch and each including one of said solenoidsand a holding magnet; a switch arm arranged to move between twopositions, in either one of which it may be held by one of said magnetsand close the circuit therethrough, and a spring operatively connectingsaid core and switch arm and yieldingly resisting movement of both thecore and the switch arm and charged by movement of the core, so that,upon release of the switch arm by one of the holding magnets, it will bemoved by the spring into the other of said positions.

' FRANCIS W. RAHRER. Y

SAM EDELMAN.

